Captain O-Ring - Pentek 151120 Replacement Water Filter Housing ORing (3 Pack) Part: Pentek Water 151120 O-Ring (3 pack) Direct replacement for Part Numbers: Ace Hardware 46766, American Plumber 152030, W34-OR, Ametek Kleen-Plus 151120-03, OR-34, Culligan 01019184, 151120-27, DuPont WFAO150, Hydrotech 151120, Pentek 151120, Omnifilter 151120, OR-34, Pura 151120, US Filter OR-34 Compatible with: Pentek #10, #12, and #20 housings with 3/4" inlet/outlet connections; Culligan HF-150, HF-150A, HF-160, HF-360; Ace Hardware 45025, 46764, 46764; American Plumber W34-PR, WC34-PR, WV34, WVC34; Ametek Kleen-Plus PSCL-SI / PSCL-S1, PS-OO / PS-00, PVHCL-SI / PVHCL-S1; DuPont WFPF38001C; Omnifilter WH1 / WH5 / WH12 / OB1 (Series A) / U25 (Series E) Material: Buna-N (nitrile butadiene rubber) Manufactured and Warrantied by Captain O-Ring LLC, with decades of experience in the sealing and chemical industry.